A premise from which conclusions are drawn.
A floating reference point, or SLDMB, used to evaluate surface currents in a body of water. Often employed by coastal search and rescue.
A fixed reference point or set of reference points which precisely define a system of measurement or a coordinate system.
A fact known from direct observation.
To provide missing data points by using a mathematical model to extrapolate values that are outside the range of a measuring device.
Mental view; opinion; judgment.
The act of seeing; perception of objects by the eye; view.
The ability to see.
Something worth seeing; a spectacle, either good or bad.
Something seen.
A small aperture through which objects are to be seen, and by which their direction is settled or ascertained.
A device used in aiming a projectile, through which the person aiming looks at the intended target.
In a drawing, picture, etc., that part of the surface, as of paper or canvas, which is within the frame or the border or margin. In a frame, the open space, the opening.
a great deal, a lot; frequently used to intensify a comparative.
To see; to get sight of (something); to register visually.
To apply sights to; to adjust the sights of.
To observe or aim (at something) using a (gun) sight.
To observe though, or as if through, a sight, to check the elevation, direction, levelness, or other characteristics of, especially when surveying or navigating.